Gordon wrote:
Why is Newfoundland 30 minutes off?
Why Are Some Time Zones 30 Minutes Off Instead of an Hour ...
However, Newfoundland is 3.5 hours behind UTC. When time zones were introduced in the late 19th century, Newfoundlanders chose their 30-minute offset because that was close to the local solar time in St. John's, the city where most Newfoundlanders lived.